> Для обновления:
> youtube-dl -U Сделал все как вы сказали, заработало.
user1@debian999:~$ youtube-dl https://www.youtube.com/watch?v=CeNZ8Xp-T68
[youtube] CeNZ8Xp-T68: Downloading webpage
[youtube] CeNZ8Xp-T68: Downloading js player 39dd62a0
[youtube] CeNZ8Xp-T68: Downloading js player 39dd62a0
WARNING: Requested formats are incompatible for merge and will be merged into mkv.
[download] Destination: Lama - Лиш тільки ти-CeNZ8Xp-T68.f137.mp4
[download] 100% of 43.47MiB in 00:04
[download] Destination: Lama - Лиш тільки ти-CeNZ8Xp-T68.f251.webm
[download] 100% of 3.20MiB in 00:00
[ffmpeg] Merging formats into "Lama - Лиш тільки ти-CeNZ8Xp-T68.mkv"
Deleting original file Lama - Лиш тільки ти-CeNZ8Xp-T68.f137.mp4 (pass -k to keep)
Deleting original file Lama - Лиш тільки ти-CeNZ8Xp-T68.f251.webm (pass -k to keep)
user1@debian999:~$